FI106249B - Method of connecting at one joint location the start of a roll with the end of a web extending from another roll - Google Patents

Abstract

For the purpose of producing a web splice an adhesive tape is used which has an adhesive layer (3) essentially only on one side. The cover film of this adhesive layer consists of two parts (4 and 5) which are separated by a longitudinal seam (9). Applied on the other side of the substrate (band 2) of the adhesive layer (3) is at least one narrow adhesive strip (7), also having a cover film (8), which is preferably situated at one edge of the adhesive tape (1). <IMAGE>

Description

106249

THE METHOD OF CONNECTING THE START OF A ROLL BALL WITH THE END OF THE OTHER ROLL - FÖRFARANDE ATT VID ETT SKARVSTÄLE

The invention relates to a method according to the preamble of claim 1.

A method is known in the art for making seam joints of moving webs of material in unrolling devices, for example for coating devices, in which a double sided adhesive tape is glued to the end of a web rolled on a machine roll. After the web end is subsequently secured to the machine roll, the second cover film of the adhesive tape is pulled off so that when the old web passing through the machine roll is pressed, the ends of the webs of material are joined. This has the disadvantage that later on the coating device, for example a blade acting as a scraping member for the coating mass, is subjected to a strong impact due to the front end of the attached paper web colliding with the blade. In addition, at this point, there is a certain, though not a small, hole in the coating mass which tends to stain subsequent rollers, folding rollers, etc.

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DE-C-30 02 069 discloses a method for performing a joint joint II using a double-sided adhesive tape having a masking tape on one side with an adhesive layer only on one side and gluing on the first side • ·· f · · * · 1 'ribbon. On one side, the ribbon is thus joined to the carrier bar. By pressing the carrier bar on the reel roll, both • the adhesive strips on the outer side of the reel roll glue

After Ml, removal of the support bar removes the single-sided adhesive tape ,, ···, from the two-sided adhesive tape. The double-sided adhesive tape is then used to glue the beginning of the new web to the end of the coil roller in the support roller. The splice joint is thus intended to provide a web cut in the support roll winding apparatus, whereby the preparation of the end of the web of the old winding roller takes place immediately prior to the splitting event in the winding apparatus. If 2,106,249 would like to use this method in general, that is to say, especially when making web joints for webs used in coating equipment, there would be the disadvantage mentioned above that also a relatively thick joint would make the operation of the coating equipment much more difficult. Namely, a thick joint results from the fact that both the end of the web and the adhesive strip of the old winding roller have to pass through a coating element, e.g. a coating blade. Further, the method described is applicable only to the winding apparatus described therein, in which the end of the web is prepared for the connection immediately before the jointing operation. However, in coating equipment it is common and also necessary that a new winding roller be prepared well in advance of the joining process for storage and transportation.

The method according to DE-C-23 52 594 also utilizes a double-sided adhesive tape as well as a single-sided adhesive tape and two auxiliary tapes. To carry out the process, a special, rather large-sized apparatus is needed which pivots the old winding roller around the beginning of the web.

It is an object of the invention to provide a process which makes it possible to fabricate a web joint without the drawbacks mentioned above. thus, in particular, a very small extension and a lower extension edge of the material web «· *" V in the subsequent movement of the moving web (s).

This task is solved according to the invention according to the characterizing part of claim 1.

• · · • · · • Φ i

By the method of the invention it is achieved that only a very shallow joint is formed in the spreading element which substantially corresponds to the thickness of the one-sided adhesive tape. This will largely avoid. ti the tear of the web in the application element, in particular the application element * / ··. The auxiliary adhesive wax remains in a different position on the web roll and • has a small thickness so that it also has only a small extension.

106249 This auxiliary adhesive line can also have a very small thickness since it does not require any great requirements for its adhesion.

For better separation of the auxiliary adhesive strip from the adhesive tape, it is preferable to use a double-sided auxiliary adhesive strip coated with an adhesive layer in which the adhesion on the reel side is significantly better than on the adhesive side.

If an additional, one-sided adhesive tape is attached to the auxiliary tape, the bonding of the combined adhesive tapes to a long-stored, possibly uneven, moisture-wound reel may be improved, with the sole adhesive layer of the additional tape being on the same side. Such a composite adhesive tape can also be made by flipping up a correspondingly wide adhesive tape with auxiliary strips.

The invention will now be described with reference to the embodiments shown in the figures of the accompanying drawings. Drawings present: i «

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fit ...: Fig. 1 adhesive tape according to the invention, <I I «I« · «

Fig. 2 is a sectional view of a machine roll provided with a finished butt point on a web of material, »

Fig. 3 Relationships in the cover blade S, of the backing coating device S, • · • MI · »• ♦ '· * Figs. 4-7 each of the single ribbon shapes other than in Fig. 1 each transverse to the longitudinal direction of the ribbons. , «·

Fig. 8 transverse to the axis of the machine reel in the area of the beginning of the web «I I« ««, ·, · Il 4 ·

Fig. 9 is a connection procedure in a post-winder, ί 106249

Fig. 10 a machine roller carriage having a guide for a cassette containing adhesive tape,

Fig. 11 is a detail view of the holder and

Fig. 12 is a substantially sectional view of a substantially sectional view taken along the dotted dashed lines 11a shown in Fig. 11,

Fig. 13 is a holding and sliding device for guiding the material web head and fitting it to the machine roll,

Fig. 14 is a detail of this device,

Fig. 15 is a side view of another such holding device,

Fig. 16 is a detail of the bonding point at the end of the web of material shown in Fig. 13,

Figs. 17 and 18 show, in principle, other automatic sewing machines in other embodiments such as Fig. 13.

* * »* * Ψ '·. In Figures 1 and 4-6, the adhesive layer is marked with dotted lines. and similar or similar tape portions, for example, cover films, are denoted by the same reference numerals. but with a variety of additional spots.

Fig. 1 shows an adhesive tape 1 consisting of a carrier 2 of an adhesive layer 3, separated by a longitudinal seam 9 from the cover films 4 and 5, which adhere to the adhesive layer 3, and * * m of other narrow adhesives on both sides. of adhesive strips (including adhesive tape) 7 having a second covering film 8. In this case ..._ the adhesive strip 7 may also be replaced by a line of glue dots or glue spots.

In this case, the bonding force of the adhesive layer 7 under the cover film 8 is substantially greater than the adhesive force of the adhesive layer on the other side of this adhesive line 7. Since this adhesive strip according to Fig. 2 secures the adhesive tape to the end C of the web of machine roll or web roll A, when tearing off the end of the web, the two webs according to the minor. Thus, only a very small amount of blasting mass can accumulate at this point of impact.

Preferably, the bonding force on the opposite side of the adhesive strips 6, 7 (or 10) - which may also consist solely of the adhesive layer - on the opposite side of the adhesive tape 2 is made smaller than on the other side. For this purpose, glue surfaces of different sizes on both sides can also be formed, with the adhesive thickness being equal on both sides.

The adhesive strip 7 (etc. 6, 10, see FIG. 4; 11, see FIG. 5) follows the joint at a distance from the base of the machine roll and can thus, under various conditions, remove the «f <« "· · paper web residues resulting from the removal of the old paper web. - <«·«> · 'which is very important for the quality of the coating applied.

1 I «« f '· ** ♦ Here, of course, the "end" C of the web of material is the "beginning" of the machine roll or «*: **: web roll A.

· »« • · · · · ·

Fig. 2 shows a situation in which the adhesive tape 1 is fixed · * ·. on the one hand, on the machine side of the roll of material A, on its machine side, on the inside of the roll, and on the other hand,

Ml • to the outside of page B. This can happen

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- by hand by turning the end of the material web C around the position of · · dotted lines (hose G) where this: the head is temporarily attached by means of an adhesive piece P to the machine roll • · ·. ·,. 9 m »6 106249 film 5 is pulled off from one side of the adhesive tape 1. In order to make a joint between the ends of the material web according to Fig. 3, the second part of the cover film 4 is also pulled off the adhesive tape 1. In this case It can still be seen from Figure 3 that the narrow adhesive strip 7 still adheres to the machine reel and is thus released from the seam tape 1 at a point where the reinforcing tape 70 is further adhered to the machine reel, but which can often also be omitted.

However, due to the circumstances, such an adhesive tape as described above is not available and therefore a method for making the joint is proposed and the use of various tape shapes will be described in detail below. These may have not only an adhesive strip, for example 6 or 7, but also an adhesive film of similar width.

As mentioned above, the beginning of the web of the new machine roll A is turned into a loop G and glued with small adhesive strips P to its machine roll. Then, for example, the cover film 5 of the adhesive tape 2 is removed and this adhesive tape is glued on this adhesive surface over the beginning C of the web in a

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sesti - with the edge of the web (the beginning of the web is similar to the front of the web). Here, for example, a narrow, double-sided adhesive strip 7 with a covering film 8 is glued over the non-glued end (since there is still a cover film 4) in the region of the longitudinal edge of the tape, as shown in Fig. 1. All of this can be done manually or also by a tape unwinding device which is guided in a rail parallel to the axis of the web roller. The term "narrow adhesive tape" (or adhesive film) here means that it does not have the entire width, but only, for example, a width of, at most, 80% of the width of the adhesive tape 2, 2 ', etc. The invention. it is thus advantageous to use "narrow" adhesive tapes within the framework.

«·« «<·« · «· · 7 106249

According to Figure 4, the adhesive tape 2 may also be provided with a plurality of smaller adhesive strips 6, 7, possibly also 10, having a cover film 8, 8 'and 8' · on their non-adhesive side.

Another form of tape is shown in Fig. 5, which has another adhesive tape 11 applied to both edge adhesive strips 6 'and 7' as an adhesive tape 2 'having a covering film 12 which may still have a separation point E analogously to the covering films 4, 5 or 4', 5 '. with the point of separation. Then, the parts of the cover film 12 can be pulled off in succession and secured in succession to the adhesive tape 11 and thus also to the adhesive tape 2 'and thus also to the web starter C on the web roll.

Figure 6 shows an adhesive tape having a double-sided adhesive layer. On one side, as described above, there is a split cover film 4 '' and 51 'and on the other side a stripe-like adhesive layer as shown by dashed lines, wherein the individual film strips are covered with a cover film 71-74. These cover films can be successively pulled off with the web base C being tightly fitted to the web roll and thereby securing the adhesive tape 21 'to the web roll.

: This occurs according to the conditions where, according to Fig. 8 IM (···, an additional adhesive tape is applied over the last lap of the web • ·>. This is preferably a single-sided ··· adhesive tape 70 'used when the machine roll is deformed axially • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Sex and grooves are formed. , 7 or 10, or adhesive tapes 9 9 · 11 (Figure 5) or 2 '' (Figure 6).

• ·

Auxiliary tape 70 'glued directly onto the corrugated machine roll * - see. Fig. 8 -, is relatively wide, as '··' shown in Fig. 3, so that all narrow adhesive strips 6, 7

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8 106249 can catch onto this. This additional adhesive tape 70 or 70 'has a very high adhesive layer so that at the high speed joining procedure whereby the beginning of the new web, i.e. machine roll A, is connected to the end of the old web D, this additional adhesive tape and narrow adhesive strip 6, 7 from the main adhesive tape 2.

Figure 7 shows a further liimanau-hamuodon option of Figure 5, which is used herein as a double width of adhesive strip that is approximately the center of the perforation strong H of the turning direction of the arrow F can be formed in the shape of the tape of Figure 5 is shown. To this end, in practice, here too, small adhesive lines 6 'and 7' are provided, as shown in Figure 7. This adhesive tape must be provided with a cover film completely distributed along the length of the adhesive, as shown. Thus, the shape of the cover films in this case also corresponds to Figure 5.

These are relatively large adhesive surfaces included in the cover films 4, 5, 4 ', 5' or 4 '', 5 '' so that the joining of the moving webs can subsequently be effected properly in the jointing device (so-called "flying splice" joints).

• · «•« ·

The excess tail at the beginning of the paper web C, which occurs when the adhesive <<"·· tape is not accurately - otherwise strictly directly - <- axially webed, can later be separated, e.g. • · · * · 'along the bordering axial edge of the membrane 4, 4' ', for example by tearing off.

It is conceivable that the ribbon dots according to Figures 1 and 4-7 may be manufactured industrially and thus commercially available. To this end, the process described above is simplified, as will be described below.

i · «I <« 1 «« I f «* 4 · {9 106249

In the case of Fig. 2, the adhesive tape 1 or 2 is not bonded as a loop G, but directly to the web roll A, for example partially to the next round B with narrow adhesive strips 7 or - if there are more - with adhesive strips 7, 8 or 10 or the like. Existing cover films 8, 8 'or 8'1 are naturally removed in advance. In this case, the resulting loop G is so large that after opening the loop, the beginning C of the web, as shown in Figure 2, can still be well bonded to the adhesive tape at the point released from the cover film 5. In this case, one still has to leave a certain end "tail", which is then preferably removed by hand, whereby, for example, along the edge of the adhesive layer or the present cover film, this "tail" is teared off. In this way, there is provided a very simple method of manufacturing the hair site without the need for expensive equipment. It is, of course, possible to make a simple device with a line guide for fitting the adhesive tapes to the web roll. It is also possible to dispense with the formation of a loop G, but simply to hang the loose web head in accordance with Figure 2.

However, Fig. 2 shows a dotted break line 11a that the tape 1 can also be glued to the outside of the tube G.

(«C«

Figure 9 illustrates, in principle, how the reel · ** '. in the device for the web reel, the above method can be used quite well, since the new web reel is stopped at the rewinding event (* of course also at the same time ·· »·. * · old). In this case, adhesive tape 1 or one of the suitable strips according to Figures 4-7 is glued to the "back side" of the web, as shown by arrow 1, in the last described manner. The home page is then the page with the most appropriate ···. lightweight adhesive layer and covers 4 and 5 or 4 'and 5' or 41 '• · * .. * and 51'. Next, remove the cover film, in the examples 5 «· • ·” · or 5 'or 5 * *. Then the circle is rotated in the direction shown «· · Ϊ! rotating the web roll so much that the web 1 has passed the press point of the press gap 10 106249 between the press roll 71 and the web roll. In this passage, the - lateral web beginning C is secured to the web reel A by means of an adhesive tape 1. Advantageously, or only backwards, a new web reel 73 may be separated from the old machine reel 73 by means of a cutting blade 72. The remaining "tail" of web reel A is then - as described above - preferably separated by hand along the impact points 4 and 5. As mentioned, the cover film 4 will usually remain in the adhesive tape, since this will only be removed when the joint is finally made while the web is being processed.

This method may also be modified by gluing the adhesive tape to the front side of the web end - i.e., the cover film part 4 or 5, 4 'or 5', 4 '1 or 5' 1 - with the press roll 71 then pulling possibly smaller adhesive strips 6 or 7 or 10, the cover films 8, 8 ', 8' 'are stripped and glued with this adhesive strip, and thus also the end of the web, in principle a new web start C, to a new web reel A, which can be done by rotating a new web reel A the adhesive tape passes the press point between the press roll 71 and the new web roll A.

Fig. 10 shows in principle a sketched machine roller carriage I f! 80, wherein body 81 is provided with a bearing plate 82 for a shaft 83 of roller bushing 84 of machine roller A. The body 81 has a machine roll (A, perpendicular to the roll axis or peripheral surface, substantially horizontal on both sides of the machine roll A. This is supported in this case by a holder strip 87 with a guide where the consoles 85 are vertically movable. The 85 has a guide rail 86 which is movable horizontally. , · The axis of the machine roller A. The guide rail 86 may also have «:" · arranged - as shown in the dotted line - substantially "iii" i; bracket 85 'radially arranged relative to the roller axis on either side of the machine roller carriage. It is not disclosed that the cassette or unwinding device for the adhesive tapes 11 106249 may be guided by a flexible holder in the conductor rail 86, i.e. For example, the cassette could be connected via a spring member to a slider that slides in the guide 89 of the guide rail 86.

Fig. 11 illustrates how the cassette K can be held by the Liu bar body 91 and the retaining rail 92 in the guide rail 86 and then guided along this path, the retaining rail 92 being secured by a spring 93 and a retaining bolt 94 to the slider. The bolts 94 are screw bolts and thus the holder rail 92 and the cassette can be replaced with a new cassette width. For this purpose, a retaining plate 95 is operable which can be secured to the wing nuts 97 on the retaining rail 92. It is further shown that a narrow, thin strip 96 can be used to separate the cover film from the adhesive tape roll R during unwinding of the adhesive tape roll.

Fig. 13 shows a device for facilitating adhesion of the adhesive tape 1 to the end C of the material web. To this end, a pivot body 22 is provided with a guide and retaining roller 13 mounted on a bearing 33 at its upper end. This retaining roller is a hollow cylinder with bore holes 34 vacuum compared to the outside air pressure. Below the retaining roller 13 is provided a desk 14 for a pivoting lever 15 which pivots about the bearing position 20 and has a working plate 16. The hydraulic pushing member 29 · can be rotated by this push rod 30 to the position shown by the dotted lines. with work surface 16 leaning .... j retaining roll 13 on top. The hydraulic thrust member 29 remains in the bearing arrangement 32 of the pivot body 22. in addition, the swiveling member 21 can be pivoted by a hydraulic pushing member 21 fixed on the one hand by a bearing member 24 to the bottom plate 19 and on the other hand by a bearing member 23 on the pivot body. Again, the pivoting body is • «· *" pivotable around bearing position 27 on base plate 19.

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Fig. 14 is an enlarged view of a workbench 14 having a worktop 16. This worktop has a plurality of retaining means (retaining means 12) that enable the alignment of the strips of adhesive on the worktop 16. In addition, the work plate still has bores 26. Because the worktop 14 is formed as a hollow housing that can be subjected to a vacuum under port 41 relative to the outdoor pressure, this vacuum acts through the bores 26 and holds the adhesive strips so that they cannot fall in the direction of the holding roller 13.

The adhesive tape, or a piece of adhesive tape as shown in Fig. 1, is placed on the work surface and is thus adhered to the end of the web C when the work table 14 is turned up. By rotating the guide and holding roller 13 or the machine roller A, the end of the material web C is guided to the fastening position relative to the machine roller A. The cover film 8 of the narrow adhesive strip 7 is removed beforehand.

Figure 14 shows that the working sheet has a tear edge 18 which corresponds to the joint edge of the end C of the material web. In the position shown by the dotted lines of the desktop of Figure 13, this edge can be achieved by tearing off excess paper at the end of the web.

. There are, of course, also other accessories <11 that make it possible to cut the web of material into the form shown.

* * Figure 16 shows the position of the adhesive tape 1 where it is * · ** · secured from the desktop 14 as shown in Figure 13 to the end of the material web «· · ϊρί. Fig. 15 illustrates a device for the guide roller 13, which does not have a desk 14 according to Fig. 13. Instead, a fixed worktop 17 is mounted which is mounted on a pivot body.

· '**; size 22 '. Here, the material web C is immediately fitted by hand

• · · apply adhesive tape 1 or cut adhesive tape.

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In Fig. 17, the desk 50 is formed as a casing of approximately square cross-section. The working surface on which the adhesive strip is placed is denoted by reference numeral 16 '. The interior of the housing is hollow and is preferably under vacuum at least partially relative to the outdoor pressure, in any case in the region where the working surface 16 'is located. It is provided with a connector 41 (denoted 41 ') as shown in the embodiment of Figure 14. Similarly, bores 26 are provided on the desktop, as in the embodiment of Figure 14. For the toothed joint of Fig. 14, there are likewise provided fastening pins 25, which of course must be designed to be immersed, for example, by loading with a spring.

The end of the web of material depends on the dotted line above the holder roll 13. First, the workbench 50 is rotated to a position where the blade 54 intersects the web edge of the material web. For this purpose, the shell surface of the retaining roller 13 is preferably rubberized. The adhesive strips disposed on the work surface 16 'are held in place by vacuum and after rotation of the desk 50 is rotated by the pivot arm 15' to a position where the working surface 16 ', as shown in the figure, is sufficiently opposite the retaining roller 13. -, the strips also attach in the Zick-Zack format to the end of the web.

· ··· _ * This pivoting movement can be effected either by a stepper motor or • i · ···· 'hydraulic means corresponding to Fig. 13 ...: means 21 and 29 by means of end switches. The pivot body corresponds to the pivot body "· * '· substantially as shown in Figure 13 and is denoted by * J **: denoted by the reference numeral 22' 1.

·· «• · · •» i

In Fig. 18, the desk is formed from a hollow cylinder to a roll 52. It also has a cutting edge 54. the surface is conceivable in a comparable position as in the case of the desktop of Fig. 13. Again, the * * «desktop-forming roller 52 must have a pivot or rotation drive for a particular pivot or rotation motion.

c t «« I

• · I <; Preferably, the bending moment of the retaining roller 13 is substantially greater than that of the desktop 16, 50 or 52.

Claims (6)

106249 u A method for joining at the junction the beginning of the web of the roll (A) with the end of the web coming from the other roll with an adhesive tape (1) having an adhesive layer on one side, characterized in that the adhesive tape (1) extending in the direction above the web with its adhesive layer and having at least one additional adhesive strip (6, 7; 6 ', 7'; 10) on both sides, provided with an adhesive layer on both sides, which - in a tight outer layer of web - is glued at the end of the outermost web roll, and wherein the end of the web of the second roll is joined with a portion of the adhesive tape extending over the beginning of the web by means of an adhesive layer on the second roll (A), and further by an additional adhesive strip (6, 7; 6 ', 7'; 10) attaches to a second roll and not to an adhesive tape (1). Method according to Claim 1, characterized in that the adhesive tape (6, 7; 6T, 7 '; 10) on the side facing the roller (A) is substantially more adherent than on the side facing the adhesive tape (2). Method according to claim 1 or 2, characterized. by means of an additional adhesive tape (f '(6', 7 ') on the adhesive tape (2') which secures an additional adhesive tape (11) with the 14 · * sole adhesive layer arranged on the roll side, (11) and the additional adhesive tapes (6 ', 7') in the connection of the webs are • • • • • • • * attached to one of the rolls (A) and not to the adhesive tape. 4. Förfarande att vid ett skarvstulle förbinda banbörjan av en rulle (A) med banänden av en frän en giving re utlöpande bana medelst ett klisterband (1), glancing at the link uppvisar et klisterskikt kännetecknat därav, att klisterbandet (1) klistras fast I have a förhällande account roll (A) inre sidan av banbörjan och i omkretsriktningen Över banbörjan skjuter ut med sitt klisterskikt och sin baksida uppvisar ätminstone en extra klisterremsa (6, 7; 6 ', 7'; 10), glance at the bands sidorna försedd med et klisterskikt och som klisterbandet (1) - vid stramt yttre banvarv - klistras fast pä banrullen vid slutet av det yttersta banvarvet och color banänden av den ena rullen förbinds med över banbörjan medelst klisterskikt utskjutande del av klisterbandet. ) och vidare den extra klisterremsan (6, 7; 6 ', 7'; 10) vid förbindningen av banorna jahtar vid den andra rullen (A) och ej jahtar kvar vid klisterbandet (1). A method according to claim 3, characterized in that the excess adhesive tape (11) is formed by folding ff of the adhesive tape (2) formed to a corresponding width. • · · «4 •» 4 * »•» • · * f *> · • · · • «• il • ♦ PATENTKRAV 106249 5. Förfarande enligt patent krav 1, kännetecknat därav, att det extra klisterbandet (6, 7; 6 ', 7'; 10) with a crank band (A) crank bandage and a crank band (2). crank binder. 6. Förfarande enligt patent filav 1 eller 2, kännetecknat • »« "V d, att medelst den extra clister (6 ', 7') end clister (2 ') and fastsatt ett ytterligare clister band (11), stems themselves • · · · ** · clisters and anordnat rollers and colors klisterbandet (11) och de extra klisterremsorna (6 ', 7') vid förbindningen av banorna harpar kvar vid den andra rullen (A) och ej vid klister- • • f * · '1 bandet (2'). «· ·: ... 1 4. Förfarande enligt patentkrav 3, kännetecknat därav, • 9 · att det ytterligare klisterbandet (11) by genome vikning av ett motsvarande Brett utbildat klisterband (2). Φ 9 9 9, 9 • »·